检索结果-南通市图书馆

Facile synthesis of accordion-like porous carbon from waste pet bottles-based MIL-53(Al)and its application for high-performance Zn-ion capacitor

引用

Green Energy & Environment 2024年第7期9卷 1138-1150页

作者： Jiaxin Li Shuai Zhang Yumeng Hua Yichao Lin Xin Wen Ewa Mijowska Tao Tang Xuecheng Chen Rodney S.Ruoff Faculty of Chemical Technology and Engineering West Pomeranian University of TechnologyPiastow Ave.4271-065SzczecinPoland Key State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China School of Safety Engineering China University of Mining and TechnologyXuzhou221116China Institute of Advanced Electrical Materials Qingdao University of Science and TechnologyQingdao266042China Institute for Basic Science Center for Multiple Dimensional Carbon Materials Ulsan44919Republic of Korea Department of Chemistry Ulsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea Department of Materials Science and Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea

It is of great scientific and economic value to recycle waste poly(ethylene terephthalate)(pet)into high-value pet-based metal organic frameworks(MOFs)and further convert it into porous carbon for green energy storage *** the present study,a facile and costeffective hydrothermal process was developed to direct recycle waste pet bottles into MIL-53(Al)with a 100% conversation,then the MOFderived porous carbon was assembled into electrodes for high-performance *** results indicated that the as-synthesized carbon exhibited high SSA of 1712 m^(2)g^(-1)and unique accordion-like structure with hierarchical *** to these advantageous characters,the assembled three-electrode supercapacitor displayed high specific capacitances of 391 F g^(-1)at the current density of 0.5 A g^(-1)and good rate capability of 73.6% capacitance retention at 20 A g^(-1)in 6 mol L^(-1)KOH ***,the assembled zinc ion capacitor still revealed outstanding capacitance of 335 F g^(-1)at 0.1 A g^(-1),excellent cycling stability of 92.2% capacitance retention after 10000 cycles and ultra-high energy density of 150.3 Wh kg^(-1)at power density of 90 W kg^(-1)in 3 mol L^(-1)ZnSO_(4)*** is believed that the current work provides a facile and effective strategy to recycle pet waste into high-valuable MOF,and further expands the applications of MOF-derived carbons for high-performance energy storage devices,so it is conducive to both pollution alleviation and sustainable economic development.

关键词： pet Recycling Porous carbon Supercapacitor Energy storage

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

pet image reconstruction with rotationally symmetric polygonal pixel grid based highly compressible system matrix

引用

Nuclear Science and Techniques 2013年第3期24卷 6-17页

作者： YU Yunhan XIA Yan CHEN Jing HONG Baoyu LIU Yaqiang WANG Shi MA Tianyu Key Laboratory of Particle & Radiation Imaging (Tsinghua University) Ministry of Education Department of Engineering PhysicsTsinghua University National Institute of Metrology

To achieve a maximum compression of system matrix in positron emission tomography (pet) image reconstruction, we proposed a polygonal image pixel division strategy in accordance with rotationally symmetric pet geometry. Geometrical definition and indexing rule for polygonal pixels were established. Image conversion from polygonal pixel structure to conventional rectangular pixel structure was implemented using a conversion matrix. A set of test images were analytically defined in polygonal pixel structure, converted to conventional rectangular pixel based images, and correctly displayed which verified the correctness of the image definition, conversion description and conversion of polygonal pixel structure. A compressed system matrix for pet image recon was generated by tap model and tested by forward-projecting three different distributions of radioactive sources to the sinogram domain and comparing them with theoretical predictions. On a practical small animal pet scanner, a compress ratio of 12.6:1 of the system matrix size was achieved with the polygonal pixel structure, comparing with the conventional rectangular pixel based tap-mode one. OS-EM iterative image reconstruction algorithms with the polygonal and conventional Cartesian pixel grid were developed. A hot rod phantom was detected and reconstructed based on these two grids with reasonable time cost. Image resolution of reconstructed images was both 1.35 mm. We conclude that it is feasible to reconstruct and display images in a polygonal image pixel structure based on a compressed system matrix in pet image reconstruction.

关键词：图像重建图像像素转换矩阵压缩系统多边形旋转对称 pet 可压缩

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

STUDY ON THE EFFECTS OF TLCP ON PYROLYSIS OF pet AND ITS RETARDANT MECHANISM

引用

Chinese Journal of Polymer Science 2008年第1期26卷 111-116页

作者： Deng, Yi Wang, Yu-zhong Zong, Zhi-jing Liu, Xiu-hua Du, Xiao-hua China Acad Engn Phys Mianyang 621900 Peoples R China Sichuan Univ Ctr Degradable & Flame Retardant Polymer Mat Chengdu 610064 Peoples R China

The flame retardancy of aromatic thermotropic liquid crystal phosphorus-containing copolyester,TLCP,on pet was *** results show that the presence of TLCP promotes char formation of the substrate and enhances thermal stability of char,hence delay its *** pictures show that the char formed from pet/TLCP is more compact, therefore is more resistant to fire and heat than that from pure *** gas analysis by I.R measurements indicates that TLCP would decompose to produce phosphor...

关键词： Thermotropic liquid crystal copolymer Flame retardant pet

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Improving the detecting efficiency of suspected gastrointestinal tumors with dual-time-point 18F-FDG pet/CT

引用

Nuclear Science and Techniques 2017年第10期28卷 23-30页

作者： Jian-Hua Song Jin-Hua Zhao Xue-Qian Xie Yan Xing Xiang Chen Wen-Li Qiao Chang-Cun Liu Tai-Song Wang Department of Nuclear Medicine Shanghai General HospitalShanghai Jiao Tong University School of Medicine100 Haining Rd.Shanghai 200080China Department of Radiology Shanghai General HospitalShanghai Jiao Tong University School of Medicine100 Haining Rd.Shanghai 200080China

We conducted a retrospective analysis of 221 subjects with 256 suspected gastrointestinal lesions from2007 to 2015 to explore the detecting efficiency of dualtime-point fluorine-18 fludeoxyglucose(^(18)F-FDG) positron emission tomography/computed tomography(pet/CT)and pathology examination. The abdominal delayed pet/CT was performed within 45 min of the conventional *** change in maximum standardized uptake value(ASUV_(max)) and morphological features of the suspected lesions between the conventional and dual-time-point pet/CT were compared. The sensitivity, specificity, positive predictive value, and negative predictive value(NPV) of conventional pet/CT were 81.6%(84/103), 56.2%(86/153), 55.6%(84/151), and 81.9%(86/105), *** of dual-time-point pet/CT were 94.1%(97/103),78.4%(120/153), 74.6%(97/130), and 95.2%(120/126),respectively. There was a significant difference between the conventional and dual-time-point pet/CT(P pet/CT had a higher sensitivity and NPV than the conventional pet/CT to detect gastrointestinal *** constant morphology and increased SUV_(delay) help to detect the tumors and adding delayed imaging on the locality will be an effective method when we accidentally find a suspected gastrointestinal tumor on the conventional pet/CT images.

关键词：胃肠道肿瘤 CT检测检测效率 pet 肠肿瘤计算机断层扫描正电子发射断层扫描形态特征

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

^(68)Ga-labeled amphiphilic polymer nanoparticles for pet imaging of sentinel lymph node metastasis

引用

Regenerative Biomaterials 2023年第1期10卷 799-807页

作者： Qin Chen Xiaomin Fu Huawei Cai Shengxiang Fu Zhongyuan Cai Mufeng Li Xiaoai Wu Rong Tian Hua Ai National Engineering Research Center for Biomaterials Sichuan UniversityChengdu 610064China Department of Nuclear Medicine West China HospitalSichuan UniversityChengdu 610041China Department of Radiology West China HospitalSichuan UniversityChengdu 610041China

Precise diagnosis of lymph node metastasis is important for therapeutic regimen planning,prognosis analysis and probably better outcomes for cancer *** this work,^(68)Ga-labeled amphiphilic alternating copolymers nanoparticles with different rigid ligands were synthesized as positron emission tomography(pet)probes for lymph node metastasis *** labeling efficiency and stability of nanoparticles was improved with increased rigidity of coordination ***(^(68)Ga-L-MDI-PEG)nanoparticles(PU(^(68)Ga-L-MDI-PEG)NPs)with the strongest rigidity of coordination unit exhibited the lowest critical micelle concentration,the best^(68)Ga labeling efficiency and *** in vivo lymph node metastasis imaging,PU(^(68)Ga-L-MDI-PEG)NPs led to different accumulations in normal lymph nodes(N-LN)and tumor metastasized sentinel lymph nodes(T-SLN),which resulted in different pet signal presentation,making it feasible to differentiate N-LN from *** comparison,small molecule probe^(68)GaL had poor lymph node accumulation,not only making it difficult to find lymph nodes on pet/computed tomography scan,but also tough to distinguish N-LN from metastatic ***,this work provides a reference for design of^(68)Ga labeled polymeric nanoparticles with high chelation efficiency and stability,as sensitive pet probes for lymph node imaging.

关键词： amphiphilic alternating copolymers rigidity pet lymph node metastasis labeling efficiency

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

NONLINEAR CURRENT-VOLTAGE CHARACTERISTICS OF CONDUCTIVE POLYETHYLENE COMPOSITES WITH CARBON BLACK FILLED pet MICROFIBRILS

引用

Chinese Journal of Polymer Science 2013年第2期31卷 211-217页

作者： Qian-ying Chen Jing Gao Kun Dai Huan Pang Jia-zhuang Xu Jian-hua Tang 李忠明 College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan University

Current-voltage electrical behavior of in situ microfibrillar carbon black （CB）/poly（ethylene terephthalate）（pet）/polyethylene （PE）（m-CB/pet/PE） composites with various CB concentrations at ambient temperatures was studied under a direct-current electric field. The current-voltage （l-V） curves exhibited nonlinearity beyond a critical value of voltage. The dynamic random resistor network （DRRN） model was adopted to semi-qualitatively explain the nonlinear conduction behavior of m-CB/pet/PE composites. Macroscopic nonlinearity originated from the interfacial interactions between CB/pet micro fibrils and additional conduction channels. Combined with the special conductive networks, an illustration was proposed to interpret the nonlinear 1-V characteristics by a field emission or tunneling mechanism between CB particles in the CB/pet micro fibers intersections.

关键词： Microfibrillar blend Conductive polymer composites PE pet Non-linear current-voltage.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

pet imaging of cerebral metabolic change in tinnitususing ^(18)F-FDG

引用

Nuclear Science and Techniques 2000年第4期11卷 247-252页

作者： TIAN Jia-He, WANG Hong-Tian, YIN Da-Yi, YAO Shu-Lin, SHAO Ming-Zhe, YANG Wei-Yan, JIANG Si-Chang (The PLA General Hospital, Beijing 100853) 解放军总医院北京 100853

Tinnitus is an auditory disorder hardly assessable by clinical technology. pet imaging of the brain in 13 cases with and 10 without tinnitus was undertaken at 40 min after injection of 280-440 MBq 18F-FDG. To ensure the quality of the pet study, all cases followed a normalized procedure with visual and auditory blockage. CT/MRI imaging and routine acoustic tests were carried out in all subjects. pet revealed that an increased uptake of 18F-FDG at left med-temporal lobe (primary auditory center, PAC) present exclusively in tinnitus, regardless the side of hearing hallucination. Significant asymmetry was noted between left and right PAC, but not at other cortex area. While control cases showed no asymmetric uptake between two hemispheres. The abnormal PAC uptake did not respond to external pure sound stimulus, nor did it relate to the seventy of hearing loss assessed by acoustic tests. No anatomical or morphological alteration could be proven on CT/MRI. In conclusion, pet/18F-FDG objectively revealed an increased metabolic change at left PAC in tinnitus, which is of diagnostic value; and there is evidence suggesting tinnitus is most likely induced by a functional change in the brain.

关键词： pet ^18F-FDC 氟18 放射性核素标记正电子发射X线断层摄影术放射性核素显像耳鸣诊断

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

pet radiopharmaceuticals for neuroreceptor imaging

引用

Nuclear Science and Techniques 2006年第3期17卷 143-147页

作者： S. M. AMETAMEY P. A. SCHUBIGER Center for Radiopharmaceutical Science of ETH PSI and USZ Department of Chemistry and Applied Biosciences of ETH Zurich Switzerland

Routine clinical pet radiopharmaceuticals for the noninvasive imaging of brain receptors, transporters, and enzymes are commonly labeled with positron emitting nuclides such as carbon-11 or fluorine-18. Certain minimal conditions need to be fulfilled for these pet ligands to be used as imaging agents in vivo. Some of these prerequisites are discussed and examples of the most useful clinical pet radiopharmaceuticals that have found application in the central nervous system are reviewed.

关键词： pet 放射性药品大脑受体碳-11 氟-18

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Preclinical evaluation and pilot clinical study of [^(18)F]AlF-labeled FAPI-tracer for pet imaging of cancer associated fibroblasts

引用

Acta Pharmaceutica Sinica B 2022年第2期12卷 867-875页

作者： Kongzhen Hu Junqi Li Lijuan Wang Yong Huang Li Li Shimin Ye Yanjiang Han Shun Huang Hubing Wu Jin Su Ganghua Tang Department of Nuclear Medicine Nanfang HospitalSouthern Medical UniversityGuangzhou 510515China Shenzhen International Institute for Biomedical Research Shenzhen 518116China National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital&Shenzhen Hospital Chinese Academy of Medical Sciences and Peking Union Medical CollegeShenzhen 518116China State Key Laboratory of Respiratory Disease National Clinical Research Center for Respiratory DiseaseGuangzhou Institute of Respiratory Healththe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510182China

In recent years,fibroblast activation protein(FAP)has emerged as an attractive target for the diagnosis and radiotherapy of cancers using FAP-specific ***,we aimed to design a novel^(18)Flabeled FAP tracer([^(18)F]Al F-P-FAPI)for FAP imaging and evaluated its potential for clinical ***[^(18)F]Al F-P-FAPI novel tracer was prepared in an automated manner within 42 min with a non-decay corrected radiochemical yield of 32±6%(n=8).Among A549-FAP cells,[^(18)F]Al F-P-FAPI demonstrated specific uptake,rapid internalization,and low cellular *** to the patent tracer[^(18)F]FAPI-42,[^(18)F]Al F-P-FAPI exhibited lower levels of cellular efflux in the A549-FAP cells and higher stability in ***-pet imaging in the A549-FAP tumor model indicated higher specific tumor uptake of[^(18)F]Al F-P-FAPI(7.0±1.0%ID/g)compared to patent tracers[^(18)F]FAPI-42(3.2±0.6%ID/g)and[68 Ga]Ga-FAPI-04(2.7±0.5%ID/g).Furthermore,in an initial diagnostic application in a patient with nasopharyngeal cancer,[^(18)F]Al F-P-FAPI and[^(18)F]FDG pet/CT showed comparable results for both primary tumors and lymph node *** results suggest that[^(18)F]Al F-P-FAPI can be conveniently prepared,with promising characteristics in the preclinical *** feasibility of FAP imaging was demonstrated using pet studies.

关键词： Fibroblast activation protein [^(18)F]AlF-P-FAPI pet Nasopharyngeal cancer

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Synthesis and biological evaluation of ^(18)F-FB-NGA as a hepatic asialoglycoprotein receptor pet imaging agent

引用

Nuclear Science and Techniques 2013年第6期24卷 50-55页

作者： GU Xiaobo CAI Gangming JIANG Mengjun ZHOU Yaoyuan ZHANG Rongjun Key Laboratory of Nuclear Medicine Ministry of HealthJiangsu Key Laboratory of Molecular Nuclear MedicineJiangsu Institute of Nuclear Medicine Department of Clinical Laboratory Science the First Wuxi Affiliated Hospital of Nanjing Medical UniversityWuxi Clinical Science Research Institute

Asialoglycoprotein receptor(ASGP-R)is a hepatic membrane receptor that uniquely exists on the surface of mammalian hepatocytes,and has been used as target of liver functional imaging agents for many *** labeled the Galactosyl-neoglycoalbumin(NGA)with 18F to get a pet molecular probe 18F-FB-NGA and evaluated its ability as a liver functional pet imaging *** 18F-FB-NGA was prepared with NGA by conjugation with Nsuccinimidyl-4-18F-fluorobenzoate(18F-SFB)and purified with PD-10 desalting *** radiolabeling yield and radiochemical purity of 18F-FB-NGA were determined by *** with 18F-F–,the total time for 18F-FB-NGA was about 120±10 *** decay-corrected radiochemical yield is about 25–30%.The radiochemical purity of purified 18F-FB-NGA was more than 98%.Labeled with 185–1850 MBq 18F-SFB,the specific activity of 18F-FBNGA was estimated to be 7.83–78.3 TBq/*** of 18F-FB-NGA in normal mice was investigated after injection through the tail *** results showed that the liver accumulated 39.47±3.42 and 12.12±6.11%ID/g at 10 and 30 min after injection,*** Micropet images in mice were acquired with and without block after injection of the radiotracer,*** liver activity accumulation was observed at 5 min after injection in normal *** the contrary,the liver accumulation was significantly lower after block,indicating the specific binding to ASGP-R.18F-FB-NGA is probably a potential pet liver imaging agent.

关键词：去唾液酸糖蛋白受体细胞膜受体肝功能 pet 显像剂生物学评价放射化学纯度放射性标记

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：